What is an array?

• A way to subtract two numbers

• A number sentence

• A tool that measures length, width and height

• A set that shows equal groups in rows and columns

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CCSS.3.OA.A.1

How many rows are in this array?

• 4

• 3

• 5

• 2

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CCSS.2.OA.C.4

Match the array to this number sentence:

3 + 3 + 3 = 9

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CCSS.2.OA.C.4

There are _____ columns in this array.

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CCSS.2.OA.C.4

Find the most efficient number sentence for this array.

• 2 + 2 + 2 + 2 = 8

• 4 + 4 = 8

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CCSS.2.OA.C.4

Write the most efficient number sentence for this array.

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CCSS.2.OA.C.4

Select all of the arrays with 4 columns.

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Tags

CCSS.3.OA.A.1

3×5=?

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CCSS.3.OA.A.1

If it is two rows of four what equation would be the best option

• 2×4

• 4+4×2

• 2+2

• 4+4

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CCSS.2.OA.C.3

Moby has an array of hearts. He uses the number sentence 2 x 3 to find the total number of hearts. Which array does he have?

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CCSS.2.OA.C.4